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樟树(Cinnamomum camphora),又名香樟,小叶樟,是我国珍贵用材树种之一。为了查明樟树人工用材林有机物质的积累、变化和分配规律,我们于1985年对本场21年生樟树林分生物量进行了测定。一、样地概况样地设置在三明莘口小湖工区的低丘南、北两个坡面上。坡度20—30°,海拔200—300米。土壤为红壤,土层厚1米以上,腐殖质层6—30厘米,pH值5—5.5。样地面积150平方米,计20块。本区属亚热带气候,年均温19.4℃,年降雨量1,586.4毫米(多集中在4—6月)。冬季干旱、多雾,年均湿度81%,无霜期300天左右。樟树林是在阔叶林采伐迹地上人工更新起来的,初植密度2,500株/公顷。造林后3—8年曾受到樟树卷叶蛾和樟巢螟的严重为害,前5年每年抚育两次,以后不定期抚育。现林分
Cinnamomum camphora, also known as camphor, camphor leaf, is one of China’s precious timber species. In order to ascertain the accumulation, variation and distribution of organic matter in camphor tree plantation, we measured the 21-year-old camphor tree stand biomass in 1985. First, the sample site Sample settings in Sanming Xin Kou small work area on the low hill south and north two slopes. Slope 20-30 °, elevation 200-300 meters. Soil is red soil, soil thickness of 1 meter above, humus layer 6-30 cm, pH value of 5-5.5. Sample area of 150 square meters, count 20. The subtropical zone is a subtropical zone with an annual average temperature of 19.4 ℃ and annual rainfall of 1,586.4 mm (mostly concentrated in April-June). Winter drought, foggy, with an average annual humidity of 81%, frost-free period of about 300 days. Cinnamomum camphora is a man-made regeneration in the deciduous broad-leaved forest, the initial planting density of 2,500 plants / hectare. 3-8 years after afforestation has been severely damaged by the camphor leaf roller and camphor borer moths, the first 5 years of tending twice a year, from time to time after tending. Now the forest